Practice Test Geeks(NETTCP) New England Transportation Technician Certification Program Practice Test
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Field Testing Flashcards

7 cards from real NETTCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Field Testing flashcards as text

  1. When performing a nuclear density gauge test on a compacted asphalt layer, what safety precaution is mandatory before beginning?

    Answer: Notify nearby workers and establish an exclusion zone

    Nuclear gauges emit radiation, so workers must be notified and a safety exclusion zone established before use.

  2. A field technician collects a soil sample for moisture-density (Proctor) correlation and notices the sample bag has a hole. What is the correct action?

    Answer: Re-sample from the same location using an intact container

    Sample integrity is critical; a compromised container can cause moisture loss that invalidates test results, requiring re-sampling.

  3. During a concrete field test, the slump measured is 9 inches when the specification maximum is 5 inches. What should the technician do?

    Answer: Reject the load and notify the inspector

    A slump exceeding specification limits indicates excessive water content; the load must be rejected per AASHTO/ACI standards.

  4. What does a falling weight deflectometer (FWD) measure during pavement field testing?

    Answer: Pavement layer deflection under a simulated load

    The FWD drops a known weight onto the pavement and measures the resulting deflection basin to evaluate structural capacity.

  5. During a field sand cone density test, the technician spills some of the calibrated sand before completing the test. What is the correct response?

    Answer: Void the test and start over with fresh calibrated sand

    Spilled sand compromises the known volume measurement, so the test must be voided and repeated with properly calibrated sand.

  6. At what temperature must Portland cement concrete be placed according to typical cold-weather construction requirements in New England?

    Answer: Above 50°F (10°C) at the point of placement

    Most DOT specifications require concrete to be above 50°F (10°C) at placement to ensure proper hydration and strength gain.

  7. Which AASHTO test method is used to determine the air content of freshly mixed concrete using the pressure method?

    Answer: AASHTO T 152

    AASHTO T 152 (equivalent to ASTM C231) covers the pressure meter method for measuring air content in fresh concrete.